Your patch has been added to the PostgreSQL unapplied patches list at:
I will try to apply it within the next 48 hours.
> Attached patch does the above.
> 1. Incompatible changes: CURSOR is now a keyword and may not be used as an
> identifier (tablename, etc). Otherwise, we get shift-reduce conflicts in
> 2. Major changes:
> a) RangeTblEntry (RTE for short) instead of having two possibilities,
> subquery and non-subquery, now has a rtetype field which can be of 3
> possible states: RTE_RELATION, RTE_SUBSELECT, RTE_PORTAL). The
> type-specific structures are unionized, so where you used to have
> rte->relid, now you must do rte->u.rel.relid.
> Proper way to check what is the RTE type is now checking for rte->rtetype
> instead of checking whether rte->subquery is null.
> b) Similarly, RelOptInfo now has a RelOptInfoType which is an enum with 4
> states, REL_PLAIN,REL_SUBQUERY,REL_JOIN,REL_PORTAL. I did not do the
> unionization of type-specific structures. Maybe I should've if I'm going
> to get in a big change anyway.
> c) There's a function PortalRun which fetches N records from portal and
> sets atEnd/atStart values properly. It replaces code duplicated in 2
> How to test:
> declare foo cursor for select * from pg_class;
> select * from cursor foo;
> Documentation updates will be forthcoming ASAP, I just wanted to get this
> patch in queue before the freeze. Or at least making sure someone could
> look through this patch before freeze. :)
> Next patch will be one to support "SELECT * FROM func(arg1,arg2)" which
> would work by creating first a special kind of portal for selection from a
> function and then setting query source to be that portal.
[ Attachment, skipping... ]
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
In response to
pgsql-hackers by date
|Next:||From: Joe Conway||Date: 2001-09-04 05:14:38|
|Subject: Fw: Random strings|
|Previous:||From: Joe Conway||Date: 2001-09-04 04:55:23|
|Subject: Re: Bytea/Base64 encoders for libpq - interested?|